CN2365430Y

CN2365430Y - Permanent magnetic driving centrifugal water pump

Info

Publication number: CN2365430Y
Application number: CN 99206264
Authority: CN
Inventors: 郑可为
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-09
Filing date: 1999-04-09
Publication date: 2000-02-23
Anticipated expiration: 2009-04-09

Abstract

The utility model relates to a centrifugal water pump driving torque by permanent magnetic force, and a water chamber is closed. The principle and the structure of the utility model are particularly suitable for designing a miniature centrifugal water pump. Because a sealing ring (a packing) is not used, the utility model thoroughly solves the problem of water leakage between a driving shaft and a casing. The utility model comprises a water pump casing, a blade wheel, two groups of permanent magnets, an impeller shaft, a thrust bearing, a motor, etc. Because of no water leakage, the utility model can ensure the separation of water and electricity and can be operated safely.

Description

Permanent magnetism power transmission centrifugal water pump

A kind of permanent magnetism power transmission centrifugal water pump is the improvement to the existing centrifugal water pump kind of drive, is specially adapted to the design of miniature Centrifugal water pump.

Present civilian or industrial Centrifugal water pump is water pump vane and motor outrigger shaft are directly pegged graft or to be connected with coupling, along leaking out in the gap between axle and the water pump cover, have to adopt seal ring or packing structure for fear of pump housing inner high voltage water.Because of its wearing and tearing, must regularly adjust or change, seepage still can not effectively be got rid of.

The utility model provides a kind of permanent magnetism power transmission centrifugal water pump.The moment of rotation of motor drives the water pump vane rotation by the magnetic force of permanent magnet.Because the penetrability of magnetic force, water cavity can seal.Because of needn't using seal ring or packing, it has thoroughly solved the problem that leaks out the gap of high pressure water between transmission shaft and water pump cover.Water power is thoroughly isolated, and is safe and reliable to operation.

Formation of the present utility model comprises water pump cover [1], impeller [2], A group permanent magnet [3], B group permanent magnet [4], impeller shaft [5], thrust bearing [6] and motor [7].

The related A of the utility model group permanent magnet [3] and B group permanent magnet [4] can axial charging or radial magnetizing, promptly magnet vertically (axis) or transverse section (diametric(al)) form N, the S utmost point, wherein A organizes the back side (being non-influent side) that permanent magnet [3] is fixed on impeller [2].Impeller [2] is contained on the interior impeller shaft [5] of water pump cover [1] by the shaft hole sleeve on it, and can rotate freely.Thrust bearing [6] is loaded between the impeller [2] and water pump cover [1] on the impeller shaft [5].Install B group permanent magnet [4] on the overhanging spindle nose of motor [7].The flow channel in the water pump cover [1] and the flow channel of impeller [2] be Design Theory routinely still.During general assembly, impeller shaft [5] in the water pump cover [1] and motor [7] coaxial line.If A group permanent magnet [3] and B group permanent magnet [4] vertically magnetize, then the two opposite pole relative (seeing Fig. 1, Fig. 2) is referred to as dress; If radial magnetizing, the two answers suit, and promptly one group of permanent magnet can rotate (see figure 3) in another organizes permanent magnet.

According to the mutual alignment of intake pipe and outlet conduit and the mutual alignment of two groups of permanent magnets, magnetic drive centrifugal pump can be designed to multiple utility structure forever.

Fig. 1 intake pipe is permanent magnetism power transmission centrifugal water pump structural representation when coaxial with outlet conduit

Permanent magnetism power transmission centrifugal water pump structural representation when Fig. 2 intake pipe is vertical with outlet conduit

The permanent magnet sleeve structure schematic representation of Fig. 3 permanent magnetism power transmission centrifugal water pump

Water all axially goes into radially from impeller [2] in Fig. 1, two embodiments shown in Figure 2.A group permanent magnet [3] is fixed on the back side (being non-influent side) of impeller [2].Impeller [2] can rotate freely on the impeller shaft [5] in the water pump cover [1] by its upper shaft hole.Thrust bearing [6] is installed between the impeller [2] and water pump cover on the impeller shaft [5].B group permanent magnet [4] is fixed on the overhanging spindle nose of motor [7], and with impeller shaft [5] coaxial line, opposite pole (N, S) is relative, the axial clearance of two groups of magnets is according to the size adjustment of carry-over moment, it is shaped as discoid, boundary dimension is identical.Flow channel size in water pump cover [1] and the impeller [2] is the water pump Design Theory routinely.

The sealing of permanent magnetism power transmission centrifugal water pump water cavity need not seal element, and is simple in structure, and water power is isolated, and is safe and reliable, is specially adapted to the design of civilian micro pump.

Claims

1. a permanent magnetism power transmission centrifugal water pump is characterized in that it comprises water pump cover [1], impeller [2], A group permanent magnet [3], B group permanent magnet [4], impeller shaft [5], thrust bearing [6], motor [7]; A group permanent magnet [3] is fixed on impeller [2] back side (non-influent side), impeller [2] is contained on the interior impeller shaft [5] of water pump cover [1] by the shaft hole sleeve on it, thrust bearing [6] is loaded between the impeller [2] and water pump cover [1] on the impeller shaft [5], and B group permanent magnet [4] is contained on the overhanging spindle nose of motor [7]; During general assembly, the axis of impeller [2] (that is A group permanent magnet [3]) is consistent with the axis of motor [7] (that is B group permanent magnet [4]).

2. permanent magnetism power transmission centrifugal water pump as claimed in claim 1 is characterized in that A group permanent magnet [3] and B group permanent magnet [4] can magnetize vertically, and profile is plate-like, and is measure-alike, thus adopt during general assembly opposite pole (N, S) coaxial relatively to the dress form; A group permanent magnet [3] and B group permanent magnet [4] also can radially magnetize, and profile is a tubular, size small one and large one, thereby two groups of magnets employing coaxial package forms during general assembly.

3. permanent magnetism power transmission centrifugal water pump as claimed in claim 1 is characterized in that: according to the requirement of inlet and outlet pipe lines, the water intake of permanent magnetism muscle power transmission centrifugal water pump and water outlet can be on same axis or its axis vertical mutually.